patternsqlMinor
Simplify Oracle SQL: Treat null date as 'N' and non-null date as 'Y'
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nonsqlnulldatesimplifyandoracletreat
Problem
This works, but nvl AND case seem redundant.
Basically, if null then 'N' else 'Y.
CHICKEN_HATCH_DATE is a DATE data type.
Basically, if null then 'N' else 'Y.
CHICKEN_HATCH_DATE is a DATE data type.
select stricken_chicken_id,
case nvl(to_char(chicken_hatch_date),'N')
when 'N' then 'N'
else 'Y'
end chicken_hatch_date
from stricken_chicken;Solution
I'm not sure what's wrong with your code, but if you don't like all of those
work for you?
'N''s would select stricken_chicken_id,
case when to_char(chicken_hatch_date) is null then
'N'
else
'Y'
end chicken_hatch_date
from stricken_chicken;work for you?
Code Snippets
select stricken_chicken_id,
case when to_char(chicken_hatch_date) is null then
'N'
else
'Y'
end chicken_hatch_date
from stricken_chicken;Context
StackExchange Code Review Q#13052, answer score: 4
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